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Practice Listening: Multiple Choice, Single Answer
ID: #3326
Short
Mountains
Transcript:
Head up to the mountains and if the steep trails don't slow down, the thin air will. There's less oxygen up there so strenuous activity can leave you dizzy out of breath or worse. But even though you're beat, bio chemical processes are already busy at work, acclimating your body. Scientists investigated those pathways in humans and mice. They found that exposure to low oxygen depletes stores of a red blood cell protein it's called the E.E.N.T.1 and that's a good thing because now other substances that protect your body against low oxygen are free to rapidly accumulate and help the body adapt. But here's the kicker. Once the EENT1 protein goes away it doesn't come back meaning red blood cells kind of remember their altitude exposure and that means if you hit the mountains again soon enough you can acclimate faster than you did the first time. The findings are in the journal nature communications.
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